News

  1. Left brain hammers out tool use

    Structures in the brain's left hemisphere coordinate the ability to use familiar tools such as hammers and saws.

    By Bruce Bower

  2. Gestures help words become memorable

    Relevant hand gestures make a speaker's words more memorable to listeners, whereas inappropriate hand gestures undermine recall for what was previously said.

    By Bruce Bower
  3. Earth

    Solving one mystery of polar wander

    Long-term fluctuations in pressure at the ocean's bottom may be the driving force for the Chandler wobble, which causes the North Pole to wander about 20 feet every 14 months or so.

    By Sid Perkins
  4. Earth

    Early web-footed bird made impression

    Researchers have discovered the fossil tracks of an otherwise unknown bird in 110-million-year-old sediments, which pushes back evidence of web-footed birds by at least 25 million years.